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' 2 Sheets-Sheet 1. J. B. SHENGLE. DGWELING MACHINE.

. Patented Feb. 24,1891.

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(No Model.)

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J. B. 'SHENGLB DOWELING MACHINE.

Patented Feb. 24, 1891.

In lb. M)

1 4 m lll f//S/S ankam? p @bym/Z22 UNITEDv STATES PATENT OFFICE.

JOHN B. SI'IEN GLE, OF CLEVELAND, OHIO, ASSIGNOR TO MCALLISTER da DALL,

OF SAME PLACE.

DOWELING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 446,954, dated February 24, 1891.

Application filed March ll, 1890. Serial No. 343,538. (No model.)

To @ZZ whom t may concern,.- suitable set-screws a, by means of which the Be it known that I, JOHN Il. SHENGLE, a said boxes may be secured to their adjusted citizen of the United States, residingat Clevepositions in the longitudinal direction of the land, in the county of Cuyahoga and State of shaft or bed of the machine. In each of these Ohio, have invented certain new and useboxes F is properly journaled a shaft or bit- 55 ful Improvements in Doweling-lliachines, of stock G, the rear end of which carries a bevelwhich the following, with the accompanying pinion II, adapted to' mesh with a similar drawings, is a specification. bevel-pinion I upon the shaft D, said pinions This inventionrelates to certain new and I being adjustable in the longitudinal direc- 1o useful improvements vin doweling-machines. tion of the shaft to positions relative to the 6o The object of the invention is to construct boxes F. In the forward ends of these bita machine in the use of which the stiles and stocks are secured the desired bits J. rails of doors may be bored to receive the The front vertical edges of the framesAare dowel-pins at different distances apart, but formed as dovetail ways, with which engage upon the same horizontal line. Ithe vertical arms of the brackets K. A rod 65 The invention consists in the peculiar conor shaft L is properly journaled in suitable struction and arrangement of the boring apbearings across the front of the frames, and paratus proper, whereby lateral adjustment is provided with a hand-wheel M, by means of the bits upon the bed of the machine is of which it may be rotated. N are bevel- 2o obtained; in the construction of and means pinions secured upon the shaft L, said pinions 7o employed for vertically adjusting the movbeing adapted to mesh with similar pinionsO able table, upon -which is placed the material upon the lower ends of the threaded rods I), to be operated upon; in'the construction and which latter engage with a threaded opening operation of the clamps, and in the peculiar in a rearwardly-projecting lug P', formed on construction, arrangement, and various comthe back of the vertical arm of the bracket K, 75 binations of the parts, all yas more fully hereas shown in Fig. 5, the parts being so coninafter'setforth,and pointed out in the claims. structed and arranged that as the shaft L is Figure l is a top plan of my improved dowrotated the brackets K may be either raised cling-machine. Fig. 2 is an enlarged vertical or lowered, as may be desired.

3o section through the adjustable table, showing R represents the table of the machine, upon 8o one of the clamps in elevation. Fig. 3 is an which is placed the material to be operated end elevation. Fig. 4 is a Vertical cross-secupon. This table I preferably make of casttion on the line @c x in Fig. l. Fig. 5 is an iron, provided with longitudinal and lateral enlarged section on line .e ,e in Fig. 4. Fig. 6 strengthening-ribs b and c, respectively,upon

is a similar view on line y y same figure. its under face. In the lateral ribs c, which 85 Fig. 7 is an enlarged perspective view of one are coincident with the upper edges of the of the clamps. brackets K, are formed guide grooves or chan- In the accompanying drawings, which form nels adapted to engage with guide-ribs d, .a part of this specication, A represents the formed on the upper edges of the brackets in 4o frames which support the operating parts of such manner that said table may have a lat- 9o the device. Upon the top of the frame A is eral sliding movement upon the brackets. rigidly secured a bed B, Which carries rear- Sis atreadlelever,one end beingfulcrumed, wardly-projecting brackets C, in which is as at e, to each-end frame A, their outer ends properly j ournaled the driving-shaft D, to one being connected together by a foot bar or rail end of which is secured a pulley E, by means T. Each of these levers S is connected by a 95 of which the said shaft may be rotated from bar U to one arm of a bell-crank lever V, seany convenient power. cured upon a rod IV, extending between the The upper face of the bed B is formed as a brackets K, the other arm of such bell-crank dovetail way, with which engage the sliding lever being connected to the table by links Y,

. 5o boxes F, and which latter are provided with this arrangement being such that as the 10c treadle-lever is raised or lowered the table R maybe retracted from or advanced toward the bits. 'lo facilitate this movement of the table, I suspend a eounterweighted lever Z from the bed B and pivotally connect the end of such lever Z to the bar U, as shown in Fig. Lt.

In the rear edge or face of the table R- is formed a doretail way, with which engages a series of two or more sliding boxes A', which carry the vertically-adjustable rods B', Figs. L and S. These rods 13 are adapted to have a vertical movement through the sliding boxes A', through which latter is tapped a sot-screw, (not shown,) by means of which the said rods ll may be secured in their rertieally-adjusted positions; or, if preferred, the sliding boxes A may be formed in halves, as

shown in Fig. 2, in which ease the rods B are clamped between the two parts of the boxes by means of the bolts 7.', which secure the parts of the boxes together A rock-shaft C passes through the upper ends of these rods and also through the bifureated castings D', which are secured upon the shaft C. An arm E projects from the upper ends of the rods ll, and to each ot' these armsa clamp F is pivotally secured, the rear end of such clamp being slotted and extending back through the bifureateril casting D, a pin 7L engaging with the slot, as is elearlyshowu in Fig. S. (lne of the castings I), preferably the center one, is provided with a handle Gf, by means of which the rock-shaft may be partially rotated, so as to depress the clamps F upon the material being operated upon, or to raise them from the work after the dowel holes have been formed, as shown in Figs. 2 and 3.

By the employment of a machine of this character and general construction it will readily be seen that dowels may easily be bored in door Stiles and rails at different distanees apart and yet upon the same horizontal plane. It will also be seen that by vertically adjusting the table R the werk may be brought into such relative position with the bits as to form the dowel-holes at the center ofthe work or upon either side thereof, as may be desired.

What I claim as my invention isl. In combination with the table of a doweling-mael1ine,a series of castings adjustable in the longitudinal direction of said table, vertically-adjustable rods carried by said adjustableeastings,arock-shaft passingthrough the upper ends of said vertically-adjustable rods and carrying a series of bitureated castings, which engage with clamps pivotally secured to the said rod, the parts being so eonstructed and arranged as to depress the said clamps upon the work being operated upon as the said shaft is partially rotated, substantially as described.

In a machine of the characterdescribed, a supporting-bed ll, provided with adjustable sliding boxes F, bit-stocks G, journaled in said sliding boxes, pinions 1I and I, and driving-shaft I), in combination with adjustable clamps F', adapted to be simultaneously actuated by means of a rock-shaft U', the parts being constructed, arranged, and operating substantially in the manner and for the purposes described.

In testimony whereof I at'tix my signature, in presence of two witnesses, this 21st day of January, i890.

Witness "1 Il. srnaotn, )L (Torn. 

